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Updated: Apr 8, 2026
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Fabricating Metamaterials Using the Fiber Drawing Method
Published on: October 18, 2012
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Terahertz 3D bulk metamaterials with randomly dispersed split-ring resonators.
Taiyu Okatani1, Yuto Sunada2, Kazuhiro Hane2
1Department of Robotics , Graduate School of Engineering, Tohoku University, 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
Nanophotonics (Berlin, Germany)
|December 5, 2024
Summary
Researchers developed a novel 3D bulk metamaterial using randomly dispersed metal microstructures in resin. This new terahertz optical material offers a wider range of applications by overcoming limitations of current optical elements.
Area of Science:
- Optics and Photonics
- Materials Science
- Terahertz Technology
Background:
- Terahertz (THz) optical systems offer significant application potential but are limited by available optical element materials.
- Current metamaterials often require complex fabrication or are restricted to specific forms, hindering widespread use.
Purpose of the Study:
- To propose and fabricate a novel three-dimensional (3D) bulk metamaterial for terahertz applications.
- To investigate the optical properties of this new material and assess its potential as an alternative to existing optical elements.
Main Methods:
- Designed and fabricated a 3D bulk metamaterial by randomly dispersing split-ring resonators (SRRs) within a cyclo-olefin polymer matrix.
- Prepared resin sheets with embedded SRRs, diced them into single-SRR grains, and then solidified them in a mold with resin solution.
- Measured the optical properties using terahertz time-domain spectroscopy (THz-TDS).
Main Results:
- Successfully fabricated a 3D bulk metamaterial incorporating SRRs in a polymer resin.
- Terahertz time-domain spectroscopy confirmed a deviation in refractive index from the base polymer.
- Observed resonance effects from the SRRs, indicating tunable optical properties.
Conclusions:
- The fabricated 3D bulk metamaterial demonstrates altered optical properties in the terahertz band due to SRR resonance.
- This material represents a promising new class of optical materials for terahertz wave applications.
- The fabrication method offers a pathway to producing bulk metamaterials with tailored optical responses.
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